Locomotive-superheater.



A. W. ANDERSON. LOCOMOTIVB SUPERHEATER.

APPLICATION IILBD APR. 5. 1912. 1',-1 1 3,731 i Patented oct. 13, 1914.

2 SHEETS-SHEET 1.

A. W. ANDERSON. LOCOMOTIVE SUPERHEATER.

APPLIGATION FILED APAR.5,1912.

Patentedl 0G13. 13, 1914.

2 SHEETS-SHEET 2.

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l.uynuanw w. ANDERSON, orgcrrrcnao, rLLINoIs.

LocoMoTIvE-suraannn'rna.

To all whom it may concern.' Y

Be it knownl that I, ANDREW ,WILLIAM ANDERSON, a citizen of the United States, residing at Chicago, in. the county of Cook and State of Illinois, have invented certain new and useful Improvemets in Locomotive-y p Superheater's, of whiclrthe following is a specification.

My invention relatesm general to locomotive superheaters, and more particularly to i superheaters of comotives. p f

My present invention consists 1n improvethe smoke-tube type for lo-l ments in superheaters 0f the charactery coveredV by Patent No. 1010107, granted to me NovemberQS., 1911. In the super-heater specifically' disclosed inmy said patent, the wet steam chamber, which communicates with the steam supply, 'and the superheated steam chamber which communicates with integral casting with each other and with .depending headers, the alternate ones of which communicate `with the Wet steam chamber and the intermediate ones with the superheated steam chamber:

In my present invention, the wet steam chamber is formed in an integral casting with the headers communicating therewith and depending therefrom, while in a separate casting are formed the superheated steam chamber with the headers communieating therewith and depending therefrom.

My present invention also comprises other improvements in superheaters of the type covered by my said patent, which will here-` inafter be fully described and specifically pointed out in the claims.

My invention has for its object to provide a superheater for locomotives which may be economically constructed, Couveniently assembled in the smoke-box of a locomotive, which will be simple in arrangement, inexpensive in maintenance, leflicient in operation, and will interfere to a minimum degree with the boiler and smoke-box.

In the accompanying drawings, in which I have illustrated my invention as embodied in a convenient and practical form-Figure 1 is a central. vertical longitudinal section through my superheater and the adjacent portions of a locomotive; Fig. 2, a ver tical sectional view through the wet and superheated steam chambers, removed from the locomotive; Fig. 3, a vertical transverse section on line 3 3, Fig. l, portions of the Specification of Letters Patent. j Application med April 5, 1912. serial No. 688,620.

Patented Oct. 13, 1914.

superheater being shown in elevation and .the boiler-shell being omitted; and Fig. 4, agplan and horizontal sectional View of the gcastings in which are formed the wet and 'superheated steam chambers, removed from the locomotive.

, Thesame reference characters are used jto designate the same parts in the several figures ofthe drawings.

,Reference letter A indicates the shell of ga. locomotive boiler, and B indicates the front flue sheet of the boiler through which 'gextend the tire fiues C.

l vD indicates the smoke-stack, while E in- ;dicates the exhaust nozzle'leading from the jengine cylinders.

E lF indicates the steam supply conduit lleading from the throttle valve.

The above described structure is that of ian ordinary locomotive and does not in itself constitute my invention, kit being shown in order that the vposition of my improved `superheater may be fully disclosed.

, G indicates a casting having an integrall elbow conduit H which is connected with the steam supply conduit F. In this castving are formed a horizontal wet steam chamber K and a series of spaced depending headers K which communicate at their up per ends with the interior of the chamber K. Any suitable means may be provided 'for securing a steam-tight union between the elbow conduit H and the steam supply conduit F, such, for instance, as a flange z, surrounding the end of the elbow 1I, which is bolted to a ring f surrounding the conduit F and located inside of the flue sheet B. A gland F surrounds the end of the conduitF and is clamped between the ring f and iange h, the engaged surfaces of the gland and end of 4the elbow Hbeing preferably beveled, vas shown in Fig. 1, to insure a tight joint. The casting G is located in the smoke-box of the locomotive in suchv position that the chamber K lies slightly above the top row of the boiler flues.

J designates a second casting in which are formed a horizontal chamber L for the superheatecl steam and which communicates with the steam chests of the engine cylinders, and, a series @of spaced depending headers L', said headers being arranged in alternate positions relatively to the headers K which depend from the wet steam chamber K. The headers are shown as nine in stepped vertically, as shown in Fig. 1, while number, five of which depend from the wet steam chamber and four from the superheated steam chamber. The headers are staggered with respect to the vertical planes of the series of boiler iues C, as will be clearly seen by reference to Fig. 3. The adjacent headers K and L are placed in communication with each other through the medium of a plurality of vertical series of coils Mf, which extend within the boiler ues C, eachof the vertical series of coils M preferably consisting of four coils, as shown in Figs-1 and 3, and as fully disclosed in my said Patent No. 1010107.- A One end m of each of the coils M extends through an opening in the rear wall of one of the headers K', while the opposite end m2 of the coil M extends through an opening in the rear wall of the adjacent header'L, so that each of the coils M connects a header depending from the wet steam chamber with a header depending from the superheated steam chamber.

The surfaces ofy the' various headers to which thecoils are connected are preferably the front surface of each header is provided with plugs r, closing holes-alining horizontally with the ends'of the steam coils. The lower coils in each of the several vertical rows extend through iiues located in a plane below the bottoms of the headers, as shown lin Fig, 1, thereby securing the increased oapacity due to four coils in each vertical series, without necessitating the headers being projected downwardly so far as to necessitate the too great lowering of the automatic damper mechanism, which blocks the draft through the boiler flues for preventing the burning out of the coils when steam is not passing through them.

R R2 indicate two horizontally pivoted dampers, the former of which is fixed to an oscillating rod r and the latter to an -oscillating rod r2. The damper mechanism need not be further described hereinafter, as it is fully set forth in my said patent, and forms no part of my` present invention.

P designates a partition which separates the space within which the superheater is located from the rest of the smoke-box, the lower part of which is removable to permit access to the headers and superheated coils.

The headers K which depend from the wet steam chamber are offset forwardly below the plane of said chamber, so as to extend beneath the superheated steam chamber L, as will be clearly seen in Fig. 1, while the headers L which depend from the super-` heated steam chamber L are offset., so that they project beneath the wet steam chamber. By this arrangement the wet and superheated steam chambers may be located in close relation and the headers may occupy the same transverse plane. rlhe casting in steam which the superheated chamber is formed is supported upon the casting in which is formed the'wet steam chamber, by means of ears Z andil?v projecting outwardly from the ends of the casting J and having enlarged openings therethrough surrounding stdus k and k2 supported through screw threaded engagement with the adjacent wall o-f the casting G. The casting G is supported within the smokebox ofthe locomoi tive, both through the connection of the elbow coupling H with the end of the steam supply conduit, and by means of brackets g and g2 which project outwardly from the ends of the casting and rest upon suitable brackets a and a2, respectively, secured to the boilershell. The opposite ends of the superheated steam'chamber L communicate vwith conduits o leading to the cylinder steam vand adjacent ends of the casting J.

In the operation of my improved superheater, the steam passes from the conduit F when the throttle valve is open to the wet chamber K, thence downwardly through the depending headers K', through the Vertical series of horizontal coils, back to the headers L', thence to the superheated steam chamber L from which the superheated steam passes through the conduits o to the respective steam chests of the engine cylinders.

By my present improvements, the advantages fully set forth in my said Patent No. 1010107 may be attained,l and at the same time the wet and superheated steam chamlos bers and headers depending therefrom may be more economically made and assembled by reason of the fact that they are made in two separate castings. It will be observed that the casting in which the superheated steam chamber and headers depending therefrom are formed is Lyieldingly supported upon the casting in which the wet steam chamber is formed, so as to permit the two castings to relatively move to compensate for differences in expansion and contraction due to differences in temperature.

I claim: v

l. ln a superheater for locomotives, the combination with a casting comprising therein a wet steam chamber connected t0 the steam supply and headers depending from and communicating with said chamber, of a second casting comprising therein a superheated steam chamber connected to the cylinder steam chests and headers depending therefrom in alternate relation to the headers depending from the wet steam chamber, means for yieldingly connecting said eastings, and superheating coils located in the boiler fines, each coil being connected at one end to a header depending from the Wet steamchamber and at its other end to an adjacent header depending from the superheated steam chamber.

2. In a superheater for locomotives, the combination with a casting `comprising therein a wet steam chamber connected to the steam supply and headers depending from and communicating With said chamber, of a second casting comprising therein a su erheated steam chamber connected to the cylinder steam chests and headers depending therefrom in alternate relation to the headers depending from the Wet steam chamber, the headers depending from the Wet steam chamber being offset and underlying the superheated steam chamber, means for sup porting said second casting upon said first casting, and superheating coils located in the boiler fines, each coil being connected at oneend to a header depending from the Wet steamy chamber and at its other end to an adjacent header depending from the superheated steam chamber.

3. In a superheater for locomotives, the combination with a 'cast-ing, comprising therein a Wet steam chamber connected to the steam supply and headers depending from and communicating with said chamber, of a second castinA comprising therein a superheated steam c amber connected to the cylinder steam chests and headers depending therefrom in alternate relation to the headers depending from .the Wet steam chamber, the headers depending from the wet steam chamber having projecting portions which underlie the superheated steam chamber and the headers depending from the superheated steam chamber having projecting portions underlying the Wet steam chamber, and superheating coils located in the boiler fines, each coil being connected at one end to a header depending from the Wet steam chamber and at its other end to an adjacent header depending from the superheated vsteam chamber.

L In a superheater for locomotives, the

combination `with a casting comprising therein a Wet steam chamber connected to the steam supply and headers depending from and communicating with said chamber, of a second casting comprising therein a superheated steam chamber connected to the cylinder steam chests and headers depending therefrom in alternate relation to the headers depending from the Wet steam chamber, brackets projecting from said first casting for supporting the same upon the boiler shell, means for supporting said second casting upon said first casting, and superheatlng coils located in the boiler flues, each coil being connected at one end to a header depending from the Wet steam chamber and at its other end to an adjacent header depending from the superheated steam chamber.

5. In a superheater for locomotives, the combination with a casting comprising therein a Wet steam chamber connected to the steam supplyl and headers depending from and communicating with said chamber, of a second casting comprising therein a superheated steam chamber connected to the cylinder steam chests and headers depending therefrom in alternate relation to the headers depending from the Wet steam chamber, brackets projecting from said rst casting for supporting the same upon the boiler shell, ears projecting from said second casting, studs supported by said first casting and passing through enlarged holes in said ears for supporting said second casting'upon said first casting, and superheating coils located in the boiler flues, each coil being connected at one end to a header depending from the Wet steam chamber and at its other end to an adjacent header de ending from the superheated steam cham er.

6. In a superheater for locomotives, the combination with a casting comprising therein a Wet steam chamber connected to the steam supply and headers depending from and communicating with said chamber, of a second castin comprising therein a superheated steam c amber connected to the cylinder steam chests and headers depending therefrom in alternate relation to the headers depending from the Wet steam chamber, the headers depending from each chamber being oliset to project beneath the other chamber 'whereby said headers lie in the same transverse plane relatively to said locomotive, means for detachably supporting saidsecond casting upon said first casting, whereby relative movement of said castings owing to unequal expansion thereof is permitted, and superheating coils located in the boiler fines, each coil connected at one end to a header depending from the Wet steam chamber and at its other end to an adjacent header depending from the superheated steam chamber.

In testimony whereof, I have subscribed my name.

ANDREW W. ANDERSON. Witnesses: GEO. L. WILKINSON, HENRY A. PARKS.

eopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington. D. C. 

